An East Bay food activist is taking his passion to a new level, building an atlas showing the connections between people and their food.

Darin Jensen, a UC Berkeley cartographer, is crowd-sourcing maps for a book called "Food: An Atlas," which shows where food is grown, how it moves around the world and who has access to it.

"They're not really so much about place as they are about food and food issues,"Jensen said while  touring a West Oakland community garden. The garden is run by City Slicker Farms, an urban farming organization, and it's featured on one of the atlas's maps charting backyard gardens. "I'm hoping that the reader can look at the maps and extrapolate or see them as a proxy for other places."

The map is just one of 80 that Jensen and a group of "guerrilla cartographers" have assembled, showing everything from how food is transported across continents to where the ingredients for one dish originated. There's even an interactive kids section. Jensen says the food world is changing and history is easily forgotten.